CZ20012187A3 - Laundry detergent in the form of a paste - Google Patents

Abstract

The invention relates to a pasty washing agent for use in commercial laundering which contains a non-ionic surfactant, an organic and/or inorganic builder, a bleaching agent based on peroxygen, and optionally contains other common constituents. The inventive pasty washing agent is characterized in that it contains 30 wt. % to 60 wt. % of a non-ionic surfactant, 0.5 wt. % to 5 wt. % of a fatty acid and/or fatty acid alkaline-salt, 5 wt. % to 15 wt. % of citrate and/or citric acid and 15 wt. % to 35 wt. % of an inorganic peroxygen compound. In addition, the pasty washing agent does not contain alkali metasilicate nor a bleach activator. In addition to exhibiting a good cleaning efficiency, the inventive agent has a disinfecting action.

Description

The present invention relates to a detergent in the form of a paste for use in an industrial laundry, a process for the manufacture of such a composition, and a disinfectant method of washing in an industrial laundry.

BACKGROUND OF THE INVENTION

Household detergents are suitable for their intended use; they are generally in the form of a powder or sufficiently liquid to be able to be emptied or poured out and dispensed without any problems. Since such liquid detergents are also to be stored over a relatively wide temperature range, additives of organic solvents and / or hydrotropes are often added, but they do not in themselves have any effect on the washing or cleaning result and are therefore not desirable. The possibility of circumventing possible dosing problems of insufficiently flowable compositions is disclosed in European patent application EP 253 151 A2. Liquid, partially high-viscosity detergents based on nonionic and anionic surfactants are known from this document, which contain polyehylene glycol as a hydrotropic and which do not need to be dispensed by the user in liquid form but are packaged in a bag of water-soluble material in batches. such as polyvinyl alcohol.

The paste detergent described in European patent EP 295 525 B1 consists of a liquid phase in a temperature range below 10 ° C consisting of a liquid phase in the temperature range below 10 ° C. ·· ···· · · · · · · ·

The nonionic surfactant, and the solid phases dispersed therein, of some granularity consisting of alkaline detergents, preservatives and optionally anionic surfactants. Therefore, surfactants or mixtures thereof are used which must have a freezing point below 5 ° C to prevent the paste from solidifying during transport and storage at low temperatures. This pasty detergent is intended for industrial laundries and has the ability to flow so that it can be conveyed through a suction line using a conventional pump. However, it has been found that such pastes during their manufacture cannot always satisfactorily ensure the homogeneity of their constituents and often tend to decompose during storage. The decomposition concerns not only the separation of solid components from liquid components but also phase separation of the components.

Another pasty detergent composition which contains 40 to 70% by weight of a nonionic surfactant. % at room temperature of a liquid ethoxylated fatty alcohol having 10 to 20 carbon atoms and an intermediate ethoxylation degree of 1 to 8 and 20 to 50 wt. % at room temperature of a liquid ethoxylated and propoxylated fatty alcohol having 10 to 20 carbon atoms and an intermediate ethoxylation degree of 2 to 8 and an intermediate propoxylation degree of 1 to 6 and 1 to 10 wt. soaps, is described in International Patent Application WO 95/09229. The paste-like detergent has such a viscous structure that it does not flow at room temperature under gravity, has a significantly lower viscosity at shear and then flows under gravity. The dosing of the paste-like detergent or cleaning agent is preferably effected by shearing the composition to reduce viscosity and then dispensing the flowing composition with a pump.

International Patent Application WO 98/10049 discloses a pasty detergent for use in an industrial laundry, which comprises a nonionic surfactant, an organic and inorganic builder, an alkalizing agent and optionally a bleaching agent, an enzyme, a graying inhibiting polymer and / or other conventional substances and % by weight containing 5 wt. % to 30 wt. of an ethoxylated alcohol of formula

R ¹ - (OC ₂ H _{4) m} -OH (I)

Wherein R @ ¹ represents an alkyl or alkenyl radical having from 9 to 15 carbon atoms and the mean degree of ethoxylation of m may have a value of 1-8 wt. % to 20 wt. of an ethoxylated alcohol of the formula R ² - (OC ₂ H ₄ ) _n -OH (II), wherein R ² is an alkyl or alkenyl radical of 12 to 22 carbon atoms and the mean degree of ethoxylation of n can be 3 to 14 provided that n % is at least 1.0 greater than m, wt. % to 80 wt. % of an alkalizing agent, in particular an alkaline metasilicate, 1 wt. % to 20 wt. a long chain alcohol or an alkyl ether of the general formula

R ³ -OR ⁴ (III), wherein R ³ represents an alkyl or alkenyl radical of 6 to 22 C atoms, in particular 8 to 22 C atoms, and R ⁴ represents hydrogen or an alkyl radical of 1 to 6 C atoms, and up to 10% by weight . organic builder substances of the polymeric polycarboxylate type, wherein polymeric polycarboxylates are polymerization products of unsaturated mono and / or dicarboxylic acids which have no other function besides carboxyl groups.

The method of industrial washing differs from household washing, inter alia, in that, although different types of textile and differently soiled fabrics are also washed, the laundry to be washed is still subjected to collective bulk washing, which is enabled by a washing technique specially designed for the task cleaning. In industrial washing, however, there is a greater demand for efficient cleaning than for household washing, since extremely dirty laundry and infected hospital linen are cleaned. In order to minimize the consumption of detergent, it is washed almost exclusively with softened water in industrial laundries. For a detailed review, the author refers to the publications of H. Krüssmann and H. G. Hoch, "Laundry Method in Industrial Laundries", surfactants, detergents, detergents 24 (1987), 341-349, and the literature cited therein.

The compositions known from the aforementioned documents have a high cleaning efficiency and are well suited for industrial laundry of soiled laundry. If there is eventually even a load of pathogenic microorganisms that makes simultaneous disinfection insufficient, additional use of disinfectants is required.

SUMMARY OF THE INVENTION

Thus, there is a need for a detergent composition of as simple a composition as possible which, besides having a good cleaning effect, also has a disinfectant effect when using conventional industrial washing devices.

The object of the present invention to eliminate this need is a laundry detergent in the form of a paste for use in an industrial laundry comprising a nonionic surfactant, an organic and / or inorganic builder substance, a peroxide-based bleaching agent and optionally other conventional substances. % containing 30 wt. % to 60 wt. % nonionic surfactant, 0.5 wt. % to 5 wt.%, especially 0.5 wt. % to 3 wt. % fatty acids and / or alkali salts of fatty acids, 5 wt. % to 15 wt. % citrate and / or citric acid and 15 wt. % to 35 wt. inorganic peroxy compounds and does not contain an alkaline metasilicate and a bleach activator. It is surprising that, despite the abolition of the bleach activators, which are understood here as precursor compounds such as esters and amides, which form percarboxylic compounds under perhydrolysis conditions, a disinfecting agent is obtained.

It is a further object of the present invention to provide a method for washing and disinfecting laundry in an industrial laundry using a corresponding paste composition. It is preferably used at a 60 ° C wash program, i.e. at a washing temperature of about 60 ° C. In a preferred embodiment of the process according to the invention, it is also possible for all substances contained in the composition to be in the form of a paste

According to the invention, they do not use together in a paste-like detergent, but to use one or more substances separately, in particular inorganic peroxy compounds, using a paste-like composition which, except for the missing or missing substances, corresponds to the composition of the invention. In this process, using a multi-chamber scrubber, it is possible to dispense a separately used substance, in particular an inorganic peroxy compound, into the same or another chamber as the pasty composition. As used herein, the term " separately " refers to the property of " separate from the pasty composition ", i.e., the separately dosed substance can also be used in combination or in combination with other laundry detergent substances which do not undesirably interact with the pole.

The liquid phase of the pasty composition of the present invention is essentially nonionic surfactants. The composition according to the invention preferably contains 32 wt. % to 55 wt.%, in particular 35 wt. % to 50 wt. a nonionic surfactant in the form of one or more ethoxylated and / or propoxylated alcohols, preferably those corresponding to formula I or II above. Particularly preferred is the use of mixtures thereof. The alcohols or ethers of the above formula (III) and optionally additional surfactants of the formula (IV)

R ⁵ - (OC ₂ H ₄ ) _x - (OC ₃ H ₆ ) _y -OH (IV), wherein R ⁵ represents an alkyl or alkenyl radical having 9 to 15 C atoms, in particular 12 to 15 C atoms, and an intermediate degree of ethoxylation x it may have a value of 3 to 7 and a medium degree of propoxylation y may have a value of 2 to 8, they may also exist in the compositions according to the invention. The viscosity of the composition according to the invention can be adjusted by a combination of ethoxylated alcohols of formulas I and II. For compounds of formula I, II and IV may radicals R ^1, R ² or R ⁵ are a linear or branched, for example in the 2-position by methyl, whereby radicals are preferably linear primary alcohol ethereal functions. Preferably, the nonionic surfactant of formula I has a carbon chain length of 8 to 14, in particular 12 to 14 carbon atoms, and a medium degree of ethoxylation m of 1 to 8, especially 1 to 5. The nonionic surfactant of formula II has a broad carbon chain length distribution up to longer chains with 12 to 22, in particular 12 to 18 and particularly preferably 16 to 18 atoms

The ethoxylated alcohols of formula I and the ethoxylated alcohols of formula II are preferably in weight ratios of 2: 1 to 1: 1.8. The composition of the invention may contain other nonionic surfactants commonly used in laundry and cleaning compositions, such as alkyl polyglycosides and / or polyhydroxy fatty acid amides. However, the surfactant component preferably does not contain exclusively propoxylated alcohols.

For the alcohols or ethers of formula III, which contribute to a particularly good stability of the composition according to the invention in the cold and which cause little foaming and reduce the deposition of the surfactant on laundry and also contribute to the wash effects, applies with regard to the radical R ^3, in essence, what is indicated for the radicals R ¹ and R ^2nd R ⁴ is preferably methyl, ethyl, propyl or butyl in addition to hydrogen, with hydrogen and methyl being particularly preferred, especially hydrogen. A preferred embodiment of the invention comprises up to 15% by weight, preferably 2% by weight, in the compositions. % to 10 wt. compounds of formula III.

Fatty acids or alkali metal salts thereof, so-called soaps, or mixtures of fatty acids and soaps contain the compositions according to the invention preferably in amounts of 0.75% by weight. % to 2.5 wt.%, in particular 1 wt. % to 2 wt. Suitable soaps are, in particular, the alkali salts of saturated and / or unsaturated C12-18 fatty acids, for example coconut, palm kernel or tallow fatty acids, and the corresponding acids as such may also be used. Particularly preferred is the use of an optionally saponified mixture of carboxylic acids of (based on the total mixture of carboxylic acids) of 2 wt. % to 8 wt. % C14, 8 wt. % to 1 wt. % C15, 18 wt. % to 24 wt. % C ₁₆ , up to 3 wt. % C17, 20 wt. % to 42 wt. % C-is and 30 wt. % to 44 wt. C20-22 · In mixtures of fatty acids and soaps, the weight ratio of fatty acid to alkali fatty acid salt is preferably in the range of 1:99 to 50:50, in particular 5:95 to 25:75.

· · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

- 7 • «·« · 7 7

As further surfactants, the composition may contain up to 10% by weight, preferably up to 5% by weight. % and especially 0.5 wt. % to 3 wt. synthetic anionic surfactants which are particularly selected from alkylbenzene sulfonates, alkyl sulfates or alkenyl sulfates and / or ether sulfates. Suitable synthetic anionic surfactants which can advantageously be incorporated into the composition according to the invention in solid, fine, anhydrous form are, in particular, those sulfonates or sulfates which are normally in the form of alkyl metal salts, preferably in the form of sodium salts. However, the sulfonate type surfactants in particular can also be used in the form of their free acids. Suitable anionic surfactants of the sulfonate type are C9-13 alkylbenzenesulfonates besides linear alkane sulfonates having 11 to 15 carbon atoms which are obtainable by sulfochlorination or sulfoxidation of alkanes and subsequent saponification or neutralization, salts of sulfofatty acids and esters thereof which are derived from saturated fatty acids, _Ci2 to C _{18 to} C ₁₈ sulfonated at the aa position of low alcohols such as methanol, ethanol and propanol, and olefin sulfonates, which are formed, for example, by sulfonation of C ₁₂ to C ₁₈ terminal olefins and subsequent alkaline hydrolysis. Suitable sulphate-type surfactants are, in particular, primary alkyl sulphates having a preferred linear alkyl radical of 10 to 20 carbon atoms, which, as a countercation, contain an ammonium ion substituted with an alkali, ammonium or alkyl or hydroxyalkyl group. Particularly suitable are derivatives of linear alcohols having in particular 12 to 18 carbon atoms and branched analogues thereof, the so-called oxoalcohols. Accordingly, there is a particular need for products of sulfated primary fatty alcohols having a linear dodecyl, tetradecyl or octadecyl radical and mixtures thereof. Particularly preferred alkyl sulfates contain a tallow alkyl radical, i.e. essentially mixtures with a hexadecyl and octadecyl radical. Alkyl sulfates can be prepared in a known manner by reacting the corresponding alcohol components with a conventional sulfating reagent, in particular sulfur trioxide or chlorosulfonic acid, followed by neutralization with an ammonium-substituted alkali, ammonium or alkyl or hydroxyalkyl group. In addition, the compositions may contain sulfated alkoxylated products of such alcohols, the so-called ether sulfates. Preferably, such ether sulfates contain 2 to 30, in particular 4 to 10, ethylene glycol groups per molecule.

· · · · · · · · · · · · · · · · · · · · · · · · · · ·

The solid phase of the composition according to the invention consists essentially of alkalinizing agents, inorganic peroxide compounds and builder substances, where further auxiliary particles may optionally be present. The solid phase should be dispersed as homogeneously as possible in the liquid phase of the surfactant. The components of the pasty composition obtained as a solid phase should be fine and have an average particle size in the range of 5 μηι to 200 μίτι, with at most 1% of the particles having a particle size of more than 200 µm. Surprisingly, it is possible to incorporate coarse-grained solids, for example those containing 20% to 50% of particles with a particle size of more than 100 μπη, without this being advantageous for the pasty composition. Preferably, the average particle size of the solid phase particles is from 1 μπη to 80 μίτι, and in particular from 10 μπι to 60 μm, with a maximum grain size below 300 μπη, in particular below 250 μm. Preferably, 90% of the powder components are less than 200 μπι, in particular less than 150 μίτι. The mean grain size can be determined according to known methods (for example by laser bending or coulter counter).

Other components containing an alkalizing agent are often also referred to as laundry alkali. They are predominantly solid phase. They take care, under the conditions of use of the composition according to the invention, of an alkaline pH which is normally in the range from 9.5 to 11.5, in particular from 10 to 11 (measured in a 1% by weight solution of the composition in deionized water). The preferred alkalizing agent is an alkali carbonate which may also optionally be used in admixture with an alkali bicarbonate. The alkaline metasilicates as strong alkaline-acting compositions do not contain the pasty compositions of the invention. The proportion of alkalizing agent compositions is generally 20% by weight. % to 80 wt.%, preferably 30 wt. % to 70 wt. % and especially 40 wt. % to 60 wt. Especially when the phosphate content is environmentally unthinkable when using the composition according to the invention (e.g. phosphate-eliminating waste water treatment), alkali metal polymeric phosphates such as sodium tripolyphosphate may also optionally be present in the pasty compositions of the invention. Their proportion is preferably up to 70% by weight, in particular 15% by weight, based on the total composition, the proportion of remaining solids, for example alkaline carbonate

- 9 metal and / or alumosilicate, if any, may be reduced accordingly. In a preferred embodiment, the compositions according to the invention comprise 5 wt. % to 15 wt.%, especially 6 wt. % to 10 wt.

an alkali metal carbonate and / or alkali metal bicarbonate.

As an organic builder, the composition according to the invention comprises citric acid, alkali metal citrate or mixtures thereof. In addition, other polycarboxylic acid or hydroxycarboxylic acid monomers, such as gluconic acid or its salts and conventional builders-Co, or complexing agents of the class of aminopolycarboxylic acids and polyphosphonic acids, are suitable. Aminopolycarboxylic acids include nitrilotriacetic acid, ethylenediaminotetraacetic acid, diethylenetriaminopentaacetic acid and their higher homologues, preferably N, N-bis (carboxymethyl) aspartic acid. Suitable polyphosphonic acids are 1-hydroxyethane-1,1-diphosphonic acid, aminotri (methylenephosphonic acid), ethylenediaminetetra (methylenephosphonic acid) and higher homologues thereof, such as diethylenetetraaminotetra (methylenephosphonic acid). The abovementioned acids are usually used in the form of their alkali metal salts, in particular the sodium or potassium salts. Useful builder materials include homopolymers and / or copolymers of carboxylic acids or alkali metal salts thereof, with sodium or potassium salts being particularly preferred. Polymeric carboxylates or polymeric carboxylic acids having a molecular weight of at least 350, in the form of their water-soluble salts, in particular in the form of sodium and / or potassium salts, have proved to be particularly suitable as oxidized polysaccharides according to WO 93/08251, polyacrylates, polymethacrylates, polymaleinates, and in particular acrylic acid / maleic acid copolymers or meleic anhydride, preferably from 50 to 70% acrylic acid and 50 to 10% maleic acid, as described, for example, in European patent EP 022 551. The relative molecular weight of homopolymers lies generally between 100 and 100000, copolymers between 2000 and 200000, preferably 50000 to 120000, based on the free acid. A particularly preferred copolymer of acrylic acid and maleic acid is relative

Suitable, although less preferred, compounds of this class are copolymers of acrylic or methacrylic acid with vinyl ethers, such as vinyl methyl ether, vinyl ester, ethylene, propylene, and styrene, wherein the acid fraction is at least 50% by weight. Terpolymers which contain as the monomers two unsaturated acids and / or their salts and as the third monomer vinyl alcohol and / or esterified vinyl alcohol or carbohydrate can also be used as water-soluble organic builder substances. The first acidic monomer or salt thereof is derived from a C3-C8 monoethylene unsaturated carboxylic acid and preferably from a C3-C4 monocarboxylic acid, in particular from (meth) acrylic acid. The second acidic monomer or salt thereof may be a dicarboxylic acid derivative of C ₄ -C ₈ , with maleic acid and / or an allylsulfonic acid derivative being substituted at the 2-position with an alkyl or aryl radical. Such polymers can be produced, in particular, according to the methods described in DE 42 21 381 and DE 43 00 772, and generally have a relative molecular weight of between 1000 and 200 000. Other preferred copolymers are those described in U.S. Pat. in German patent application DE 43 03 320 and DE 44 17 734 and as monomers they have acrolein and acrylic acid / acrylic acid salts or vinyl acetate. Further useful are the polyacetal carboxylic acids described in U.S. Pat. Nos. 4,144,226 and 4,146,495 and are obtained by polymerizing glycolic acid esters, introducing a stable terminal end group, and saponifying the sodium or potassium salt. Also suitable are acid polymers which are obtained by polymerizing acrolein and disproporting the Canizzar polymer using a strong alkali. They are essentially constituted by acrylic acid and vinyl alcohol units, and optionally by acrolein units. The composition according to the invention preferably contains 8 wt. % to 12.5 wt. citrate and / or citric acid. In addition to citrate and / or citric acid, it preferably contains 2 wt. % to 12 wt.%, in particular 5 wt. % to 10 wt. other organic builder substances in the form of polymeric polycarboxylate.

Inorganic builder substances for the composition according to the invention are, in addition to the above-mentioned phosphate, crystalline alkali metal silicates and fine alkali metal aluminoslikates, in particular zeolites of the type NaA, X and / or P. Suitable zeolites normally have calcium binding capacity in the region of 100. up to 200 mg CaO / g, which can be determined according to the data in German patent DE 24 12 837. Their particle size is usually in the range from 1 [mu] m to 10 [mu] m. They are used in dry form. The water contained in the zeolites in bound form does not matter in the present case. Preference is given to layered silicates of the formula NaMSi _x O 2 + _x as crystalline silicates which may exist alone or in admixture with the alumosilicates mentioned. yH ₂ O, where M is a hydrogen or sodium atom, x is a number from 1.9 to 4 and y is a number from 0 to 20. Preferred values for x are 2,3 and 4. Such crystalline layered silicates are described, for example, in European patent application no. In particular, both β and δ-sodium disilicate Na ₂ Si ₂ 0 ₅ are preferred. γH ₂ O, wherein β-sodium disilicate can be obtained according to the method described in international patent application WO 91/08171. The required crystalline silicates are marketed under the names SKS6 (manufactured by Hoechst) and Nabion®15 (manufactured by Rhone-Poulec). The content of such inorganic builder material in the paste is up to 35% by weight, preferably up to 25% by weight. % and in particular 10 wt. % to 25% by weight.

In addition, the paste composition of the present invention contains an oxygen-containing oxidizing agent in the form of inorganic peroxide compounds, preferably selected from the group consisting of alkali metal perborate and percarbonate and mixtures thereof, wherein sodium natrate and borate monohydrate are of particular importance. Other suitable oxidizing agents are, for example, persulfates and peroxypyrophosphates. The compositions of the invention may contain inorganic peroxy compounds in amounts of 20 wt. % to 30 wt.%, in particular 22.5 wt. % to 27.5% by weight. The disinfecting power of the composition of the invention at a temperature of about 60 ° C is reported in the absence of bleach activators, so that the compositions of the invention are devoid of such bleach activators which usually improve the oxidizing power of such oxidizing agents.

^R ·· · »C« • ·· ··· ··· ♦ ♦ · «· ♦ •» < »· 1 d · η * ♦ * ·· ·« · »

- IZ “··· ··· · ♦ ·· ··« ··

In addition, the composition of the invention may contain other laundry adjuvants, which may normally be in amounts up to 15% by weight of the finished composition. As such laundry adjuvants, for example, enzymes, graying inhibitors, soil release agents, color transfer inhibitors such as homo and / or copolymers of vinylpyrrolidone and / or vinylimidazole, optical brighteners, suds and / or colorants and fragrances can be used. When it contains fragrances which are generally liquid, they pass into the liquid phase of the composition of the invention. However, due to their small amount, they do not have any significant effect on the flowability of the paste.

The pasty detergent compositions of the invention are preferably water-free. By "substantially free of water" is meant a condition in which the content of free water, i.e. water not in the form of hydrate and constitutional water, is up to 5% by weight, preferably below 3% by weight. It is noteworthy that, despite the presence of a peroxide-containing bleaching agent, higher water contents are quite possible than with conventional pasty, substantially anhydrous detergents. The content of organic solvents, which usually include low molecular weight and low-boiling alcohols and ether-alcohols used in liquid concentrates, and hydrotropic compounds may be in amounts up to 6% by weight, but not available.

Suitable enzymes in the compositions according to the invention are, in particular, those of the class of proteases, lipases, cutinases, allylases, pillulanases, xylanases, hemicellulases, cellulases, peroxidases and oxidases or mixtures thereof, the use of protease, amylase, lipase and / or cellulase being particularly preferred. conveniently. The proportion is preferably 0.2 wt. % to 1.5 wt.%, especially 0.5 wt. up to 1% by weight. The enzymes may be adsorbed on carriers in a conventional manner and / or incorporated into coatings or incorporated as concentrated, if possible, anhydrous liquid formulations into pastes. Useful proteases are known, for example, from International Patent Applications WO 91/02792, WO 92/21760, WO 93/05134, WO 93/07276, WO 93/18140, WO 93/24623, WO 94/02618, WO 94/23053, WO WO 94/25583,

13 WO 95/02044, WO 95/05477, WO 95/07350, WO 95/10592, WO 95/10615, WO 95/20039, WO 95/20663, WO 95/23211, WO 95/27049, WO 95 / 30010, WO 95/30011, WO 95/30743 and WO 95/34627. Preference is given to enzymes stabilized against oxidative damage, for example those known proteases or amylases which are used under the trade names Durazym® or Purafect®OxP, optionally Duramyl® or Purafect®OxAm.

Suitable graying inhibitors or soil release agents are cellulose ether, such as carboxymethylcellulose, methylcellulose, hydroxyalkylcellulose, and a mixed cellulose ether, such as methylhydroxyethylcellulose, methylhydroxypropylcellulose, and methylcarboxymethylcellulose. Sodium carboxymethylcellulose and mixtures thereof with methylcellulose are preferably used. Commonly used soil release agents include copolyesters containing dicarboxylic acid units, alkylene glycol units and polyalkylene glycol units. Copolyesters having the ability to release impurities of this kind as well as their use in detergents have long been known. For example, German published application DT 16 17 141 discloses a method of washing using polyethylene terephthalate-polyoxyethylene glycol copolymers. German published application DT 22 00 911 relates to detergents comprising a niotenside and a mixed polymer of polyoxyethylene glycol and polyethylene terephthalate. German patent application DT 22 53 063 discloses acidic fabric treatment compositions comprising a copolymer of a dibasic carboxyl group and an alkylene polyglycol or cycloalkylene polyglycol and optionally an alkylene glycol or cycloalkylene glycol. European patent EP 066 944 relates to textile compositions containing a copolyester of ethylene glycol, polyethylene glycol, aromatic dicarboxylic acid and sulfonated aromatic dicarboxylic acid in certain molar ratios. From European patent EP 185 427 methyl or ethyl groups are known to be end-capped polyesters with ethylene terephthalate and / or propylene terephthalate units and polyethylene oxide terephthalate units and detergents containing such soil release polymers. European patent EP 241 984 relates to a polester which, in addition to oxyethylene groups and terephthalate acid units, also contains substituted ethylene and glycerin units. Proportion of graying inhibitors. . · _Β www - - - 14 - ...... ·· ·· ·· ··· and / or active substances in the soil release compositions of this invention is generally not more than 2 wt%. % and is preferably 0.5 wt. % to 1.5% by weight.

In particular, the dye transfer inhibitors for use in the compositions of the invention include polyvinylpyrrolidones, polyvinylimidazoles, polymeric nitrogen oxides such as poly (vinylpyridine-N-oxide), and copolymers of vinylpyrrolidone with vinylimidazole, and mixtures thereof. The proportion of color transfer inhibitors in the compositions according to the invention is preferably 0.1% by weight. % to 2 wt.%, in particular 0.2 wt. up to 1% by weight.

As optical brighteners, in particular for textiles of cellulose fibers (e.g. cotton), the compositions according to the invention may contain, for example, diaminostilbendisulfonic acid derivatives or alkali metal salts thereof. Suitable are, for example, 4,4'-bis (2-anilino-4-morpholino-1,3,5-triazin-6-ylamino) -stilbene-2,2'-disulfonic acid salts or compounds formed in the same way in place of the morpholino groups carry a diethanolamino, methylamino or 2-methoxyethylamino group. Further, brighteners of the type of optionally substituted dibenzofuranylbiphenyl or optionally substituted 4,4'-distyryl-diphenyl, for example 4,4'-bis- (4-chloro-3sulfostyryl) -diphenyl, may be present. Mixtures of brighteners may also be used. Brighteners of the 1,3-diaryl-2-pyrazoline type, for example 1- (p-sulfoamoylphenyl) -3- (p-chlorophenyl-2-pyrazoline and compounds formed in the same manner), are particularly well suited for polyamide fibers. of the brightener composition is generally not above 1% by weight, in particular 0.05% to 0.5% by weight.

The suds regulators commonly used in the compositions of the present invention include, for example, polysiloxane-silicic acid mixtures, the fine-grained silicic acid preferably being silanized therein. The polysiloxanes may consist of both linear compounds and cross-linked polysiloxane resins and mixtures thereof. Other antifoams are paraffinic hydrocarbons, in particular micro paraffins and paraffin waxes, whose melting points are above 40 ° C.

Saturated fatty acids or soaps, in particular of 20 to 22 carbon atoms, for example sodium behenate, and alkali metal salts of mono- or dialkyl phosphoric esters having alkyl chains of 12 to 22 carbon atoms. Preferably, sodium monoalkyl phosphate and / or sodium dialkyl phosphate with alkyl groups is used. C ₁₆ to C ₁₈ . The proportion of suds regulators may preferably be 0.2 wt. % to 2% by weight. In many cases, the additional use of antifoaming agents can be waived.

Dehydrating agents can also be used to increase physical stability as well as chemical stability, especially of any enzymes present, for example in the form of a crystalline water-bound salt such as anhydrous sodium, calcium sulfate, calcium chloride, sodium hydroxide, magnesium silicate or metal oxides such as calcium oxide, oxide magnesium, P4O10 or Al2O3. Such dehydrating agents, by means of which the water content of the compositions according to the invention can be reduced to particularly low values if desired, are present in the compositions according to the invention in amounts preferably of 1% by weight. % to 10 wt. % and especially 2 wt. % to 8% by weight.

For the preparation of the paste-like detergent according to the invention, a nonionic surfactant or nonionic surfactants is introduced, optionally an alcohol or an ether of the formula III is admixed, mixed with a mixture of salts of acal metals of fatty acids and optionally with a suds regulator and synthetic anionic. with a surfactant for a homogeneous premix. Such a masterbatch is further storable and remains liquid at room temperatures up to 40 ° C, although at these temperatures the masterbatch components are not always completely liquid or dissolved. Powder components including citric acid / citrate paste are preferably added to this mixture after heating to a temperature of about 80 ° C, which are especially dispersed in the premix by stirring. A premix is then formed. Subsequently, the mixture thus obtained is preferably subjected to a wet grinding process. This gives the product the desired consistency and homogeneity. The admixture of other, in particular temperature or cardiac-sensitive substances, such as perfume oils and enzymes

- 16 is carried out subsequently and their homogeneous incorporation should be as gentle as possible in order not to disturb the paste structure. The resulting detergents and cleaners according to the invention are able to flow immediately after manufacture due to the shear forces acting and are pumpable and can be filled into commercially available packages.

The paste composition according to the invention preferably has a viscosity in the range of 60,000 to 100,000 mPa · s, in particular 70,000 to 90,000 mPa · s as measured by a Brookfield rotary viscometer (spindle no. .7) at 5 rpm. These numerical values for viscosity refer to the reading after 3 minutes of measurement to take into account the eventual thixotropic effect of the paste. In a particular embodiment of the invention, the pasty detergent and cleaning agent preferably has a viscosity at room temperature such that it does not have the ability to flow under gravity. It is then preferably thixotropic and structurally viscous, i.e. it has a distinctly lower viscosity at shear and has the ability to flow under the influence of gravity, having a particularly advantageous apparent viscosity of 80,000 to 120,000 Pa.s at 25 ° C and a shear rate of 0.0001 s' ¹ as determined by a CS-Rheometer from Bohlin with a plate / plate measuring system, plate spacing of 4 mm. When sufficient shear forces are applied, for example with a shear rate of 0.1 s ^-1 and otherwise the same measurement conditions, the composition according to the invention preferably has a significantly lower viscosity, usually 100 to 1000 times. The decrease in shear viscosity remains reversible, that is to say, once the shear is complete, the composition returns to its original physical state without decomposition. In this context, it should be noted that these viscosities do not apply to measurements immediately after paste production, but to stored pastes, which are in other words equilibrium, since the shear forces acting in the production process lead to a lower viscosity of the paste, which it only increases over time to the decisive final viscosity. A shelf life of 1 month is therefore generally sufficient.

The composition of the invention normally has a density in the region

1.3 kg / l to 1.6 kg / l. The composition of the invention may be dosed by conventional means

The dispensing apparatus described, for example, in the international patent application WO 95/29282, in the German patent application DE 196 05 906, in the German patent DE 44 30 418 or in European patents EP 0 295 525 and EP 0 356 707. A particularly suitable device for dispensing structural viscous paste detergent is known, for example, from European patent EP 0 721 521 and is preferably used for dispensing structural viscous pastes according to the invention. The detergents and cleaning compositions according to the invention can also be optionally filled into water-soluble films in batches. Such films are described, for example, in European patent application EP 0 253 151. The paste composition according to the invention is preferably used in an industrial laundry for washing and disinfecting soiled laundry. In this case, a washing bath is preferably used in concentrations of 2 g / l to 5 g / l.

DETAILED DESCRIPTION OF THE INVENTION

Example 1

The substances listed in the following table were mixed together and milled in a grinding mill (roller mill, continuous flow). A flowing pasty detergent M1 to M6 was obtained immediately after production. The compositions had a density of ca. 1.4 g / cm 3 and viscosity (measured at 25 ° C with a Brookfield DV-II rotary viscometer with spindle # 7 at 5 rpm after a 3 minute measurement time) of ca. 80 000 mPa.s. The viscosity of the pastes did not change significantly when stored for more than 3 months.

Table 1: Composition of pasty detergent (% by weight)

M1 M2 M3 M4 M5 M6 Niotenzid ^a) 20 May 19 Dec 19 Dec - - 9 Niotenzid ^b) 10 9 7 7 7 9 Niotenzid ^c) - - - - 16 - Niotenzid ^d) - - - 16 - - Niotenzid ^e) - - - 3 3 - Niotenzid ^f) 8 7 9 9 11 19 Dec Alkylbenzenesulfonate 0.8 0.7 0.7 0.7 0.7 0.7 Fatty acid / soap ⁹⁾ 1,2 1.6 1.6 1.6 2 2 Isotridecanol - 3 3 3 3 3 Sodium citrate 10 10 - 5 10 - Citric acid - - 10 5 - 10 Sodium perborate 25 25 25 25 25 25 Polymeric polycarboxylate 4 6 6 6 6 6 Phosphonate 0.5 1.6 1.6 1.6 1.6 1.6 Sodium bicarbonate - 7 - - - - Foam Inhibitor 1 1 1 1 1 1 Optical brightener 0.2 0.5 0.5 0.5 0.5 0.5 Enzymes 0.6 0.8 0.8 0.8 0.8 0.8 Sodium carbonate to 100

a) C ₁₂ -14 + 3 EO fatty alcohol (Dehydol®LS 3; manufactured by Henkel KGaA)

b) C ₁₂ -18 + 7 EO fatty alcohol (Dehydol®LT 7; manufactured by Henkel KGaA)

c) Oxoalcohol Cg-n + 3 EO (Lutensol®ON 30; manufactured by BASF AG)

d) Oxoalcohol Cg-n + 7 EO (Lutensol®ON 70; manufactured by BASF AG)

e) Oleylcetyl alcohol + 2 EO (Foryl®502; manufactured by Henkel KGaA)

(g) C12-14 + 4 EO + 5 PO fatty alcohol (Dehypon®LS 54; manufactured by Henkel

KGaA)

h) Mono / distearyl phosphate

Example 2: Determination of Disinfection Effect M1

Material and methodology:

4.2 Chemothermal Laundry Disinfection - Commission for Disinfectants of the German Society for Hygiene and Microbiology, Hyg.Med 1998, 23, 127-129.

Test germs:

S. aureus

E. faecium

E. coli

C. albicans

ATCC 6538

ATCC 6057

NCTC 10538

ATCC 10231

1. Determination of bacteriostatic and fungistatic efficacy and appropriate inactivating agents (according to “guidelines” 1 / 2.1)

Growth suppression after 72 hours incubation at 37 ° C

Final concentration M1 g / l - additional 1: 1 dilution

No inactivating ingredient

- 20 - «· • · • · • · · S. aureus - - + + + + E. faecium - + + + + + E. coli - + + + + + C. albicans + + + + +

3% Tween 80 + 0.3% Lecithin + 0.1% Cysteine

S. aureus + + + + + E.faecium - + + + + + E. coli - - - + + + C. albicans + + + + +

3% Tween 80 + 3% Saponin + 0.1% Hisidin + 0.1% Cysteine

S. aureus - - + + + + E. faecium - + + + + + E. coli - + + + + + C. albicans + + + + +

3% Tween 80 + 0.3% Lecithin + 0.1% Histidine + 0.5% Na-Thiosulfate

S. aureus + + + + + + E. feacium + + + + + + E. coli - + + + + + C. albicans + + + + + +

Combination of inactivation in further experiments:

3% Tween 80 + 0.3% Lecithin + 0.1% Histidine + 0.5% Na-Thiosulfate

- 21 Explanation of symbols:

+ = turbidity due to reproduction of germs = lack of turbidity due to reproduction of germs

2. Bacteriocidal effect in quantitative suspension test (mod. According to "guidelines" I / 2.3)

Prescribed temperature: 60 ° C

Seeds of starting suspension:

E. faecium ATCC 6057: 9.34 log./ml (preculture on Brain-Heart infusion agar), 48 h at 36 ± 1 ° C)

Concentration M1 Reduction factor (log.) According to exposure time in min.

(g / l) 5 10 15 30

No albumin loading (I / 2.3.1)

6 5,07 > 5.27 > 5.26 > 5.26 3 3.50 > 5.27 > 5.26 > 5.26 1.5 3.05 > 5.27 > 5.26 > 5.26 0.75 3.02 > 5.27 > 5.26 > 5.26 Control value (20 ° C) 6.27 6.27 6.26 6.26 Control value (log./60°C) 6.24 6.17 6.16 6.10

- 22 - «· · · • · · • • «· · · · • · * « «·» «· · With 0.2% albumin load (I / 2.3.2) 6 4.90 > 5,29 > 5.24 > 5,10 3 4.51 > 5,29 > 5.24 > 5,10 1.5 3.62 > 5,29 > 5.24 > 5,10 0.75 3.09 > 5,29 > 5.24 > 5,10 Control value (log./20°C) 6.31 6.29 6.24 6.10 Control value (log./60°C) 6.30 6.19 6.16 6.11

3. Chemothermal disinfection test

Test embryo: Enterococcus faecium ATCC 6057

Grown on Brain-Heart Infusion Agar (BHI, Becton-Dickinson 11065) for 48 hours at 36 ± 1 ° C. Flushing with physiological saline solution, after centrifuging and pouring excess, the seeds were absorbed and homogenized in concentrated shaked blood (oxoid).

Combination of germ carriers

Standard cotton fiber cloths (1x1 cm, DIN 53919) were immersed in a seed suspension with germs and dried in petri dishes for 3 hours at 36 ± 1 ° C.

• ·

- 23 Conducting tests

All tests were carried out on an Miele WS 5080 automatic growth accelerator. 12.5 ml of shaken blood (Schüttelblut oxoid) were added per kilogram of laundry before the water supply. After the disinfection phase, prior to rinsing, 10 germ carriers were removed and immediately placed individually in 5 ml of casein peptone and soybean meal peptone (CLS) solution with inactivating agents and glass beads. Evidence of embryos followed homogenization of the treated cultures by shaking (10 min; 300 min ^-1 ) by pouring. 1 ml was added directly and 1 ml after dilution (0.5 ml in 4.5 ml CSL) to 20 ml liquid CSA (casein peptone agar and soybean meal peptone agar). In addition, the individual cloths were inserted into the casting plate. These plates as above were incubated at 36 ± 1 ° C for 3 weeks.

For evidence of test germs capable of reproducing in the bath after the end of the disinfection phase, a 100 ml bath was removed and immediately mixed with 100 ml with twice the concentration of CLS solution and twice the concentration of inactivation agents.

After 3.7 and 21 days incubation at 36 ± 1 ° C, the subcultures were plated on Slanetz-Bartley agar (oxoid / CM 377) for test germs incubation at 44 ° C for 48 hours.

Test series. M1 3.0 g / l bath-added at the beginning washing Disinfection temperature: 60 ° C Duration: Fifteen minutes Bath ratio: 1: 4 I.Test.řada 2.Test series 3.Test.řada

Linen (bed linen): 4.72 kg

4,72 kg

4,72 kg

Blood addition: 59.0 ml 59.0 ml 59.0 ml Quantity M1 57,0 g 57,0 g 57,0 g Heating time: 10 min 54 sec 11 min 10 sec 11 min 07 sec Measured temperature: Beginning: 60.3 ° C 60.0 ° C 60.2 ° C End: 62.1 ° C 60.4 ° C 60.1 ° C Range: 59.9-64.2 ° C 59.8-64.1 ° C 60.0-64.1 ° C Starting suspension of blood with germs log / KBE / ml: 10.70 10.70 10.70 on the germline carrier log KBE: 9.70 9.70 9.70 9.60 9.60 9.60 9.65 9.65 9.65 x: 9.65 9.65 9.65

Regenerable KBE after exposure:

1 ml CSA casting plate RF 1 ml CSA casting plate RF 1 ml CSA casting plate RF Embryo carrier 1 0 + > 8,95 0 + > 8,95 0 + > 8,95 Embryo carrier 2 0 + > 8,95 2 + 8.65 0 + > 8,95 Embryo carrier 3 2 + 8.65 0 + > 8,95 0 + > 8,95 Embryo carrier 4 1 + 8.95 3 + 8.47 0 + > 8,95 Embryo carrier 5 1 + 8.95 0 + > 8,95 0 + > 8,95 Embryo carrier 6 1 + 8.95 0 + > 8,95 0 + > 8,95 Embryo carrier 7 0 + > 8,95 0 + > 8,95 0 + > 8,95 Embryo carrier 8 1 + 8.95 0 + > 8,95 1 + 8.95 Embryo carrier 9 0 + > 8,95 1 + 8.95 0 + > 8,95 Embryo carrier 10 0 + > 8,95 3 + 8.47 0 + > 8,95

The growth of test germs (carrier of germs in the casting board) • · · · • · • · _(··· · · · · *. »* ·« * · * ·. "· · *« <- · »· * ·· ··················

- 25 = No growth of test embryos (seed carrier in the casting plate)

No evidence of test embryo in an enriched 100 ml bath. In the first test series of 6 exposed sterile cloths, they showed no evidence of test germs in the enriched culture.

Test series: No detergent

Miele 5080 automatic washing machine

Bath ratio: 1: 4

1. Test series

Laundry:

Heating time:

Disinfection temperature:

Disinfection time: measured temperature: Start:

End:

Range:

By discarding the blood suspension with germs of log.KBE / ml: on germline of log.KBE:

x:

Bed linen 4.72 kg min 44 s

60 ° C min

60.1 ° C

61.6 ° C

60.0-64.2 ° C

10.70 E. faecium

9.70

9.60

9.65

9,65 • ·

Regenerable KBE (log) on 1 ml CSA Pouring plate RF Embryo carrier 1 398 + 6.35 Embryo carrier 2 578 + 6.19 Embryo carrier 3 714 + 6.10 Embryo carrier 4 178 + 6.70 Embryo carrier 5 156 + 6.76 Embryo carrier 6 44 + 7.31 Embryo carrier 7 311 + 6.46 Embryo carrier 8 262 + 6.53 Embryo carrier 9 436 + 6.31 Embryo carrier 10 360 + 6.40

+ = Detection of test bud (cloths in the pouring plates) = No evidence of test bud (cloths in the pouring plates)

Evidence of the test bud in the bath (enriched).

4. Evaluation of results

The tests were carried out according to the requirements of “4.2 Chemothermal Disinfection of Laundry” (Status: April 1998) of the German Hygiene and Microbiology Society. According to the state of the art, the chemothermal method of disinfecting linen at 60 ° C and above is that the Enterococcus faecium test embryo is more resistant than the tuberculosis origins and other test strains of Staphylococcus aureus, Candida alibicans and Escherichia coli previously used.

The results of the quantitative suspension experiments at 60 ° C show that by adding detergent M1 (3.0 g / l) m, which is of interest to the washing process, a reduction factor of> 5 log-ιο units was achieved within 10 minutes.

Also in tests of suitability of the method of chemothermal disinfection of laundry under difficult conditions with the addition of 12.5 ml of blood per kilogram of laundry, reduction factors greater than 8.5 units of log _{10 were found} .

Using compositions M2 to M6, similar good disinfection results were obtained from Example 1.

Claims (19)

A detergent having a disinfectant effect in the form of a paste for use in an industrial laundry comprising a nonionic surfactant, an organic and / or inorganic builder, a peroxide-based bleaching agent and optionally other conventional ingredients, characterized in that it contains 30% by weight to 60% from 0.5% to 5% by weight of fatty acid and / or alkali metal salts of fatty acids, from 5% to 5% by weight of nonionic surfactant; 15% by weight of citrate and / or citric acid and 15% by weight to 35% by weight of an inorganic peroxy compound and does not contain alkali metal metasilicates and a bleach activator. Composition according to claim 1, characterized in that it contains 32% by weight to 55% by weight, in particular 35% by weight to 50% by weight, of a nonionic surfactant in the form of one or more ethoxylated and / or propoxylated alcohols. Composition according to claim 1 or 2, characterized in that it contains 0.75% to 2.5% by weight, in particular 1% to 2% by weight, of fatty acid and / or alkali metal salt of fatty acid. Composition according to one of Claims 1 to 3, characterized in that it comprises a mixture of fatty acids and alkali metal salts of fatty acids in a weight ratio in the range from 1:99 to 5:50, in particular from 5:95 to 25:75 . '· « Composition according to one of Claims 1 to 4, characterized in that it contains 8% by weight to 12.5% by weight of citrate and / or citric acid. Composition according to one of Claims 1 to 5, characterized in that, in addition to citrate and / or citric acid, it contains 2% by weight to 12% by weight, in particular 5% by weight to 10% by weight, of other organic builder substances in the form of polymeric polycarboxylate . Composition according to one of Claims 1 to 6, characterized in that it contains 20% by weight to 30% by weight, in particular 22.5% by weight to 27.5% by weight of an inorganic peroxy compound. Composition according to one of claims 1 to 7, characterized in that the inorganic peroxy compound is selected from the group consisting of alkali metal perborate, alkali metal percarbonate and mixtures thereof. Composition according to one of Claims 1 to 8, characterized in that it contains up to 5% by weight and in particular 0.5% by weight to 3% by weight of alkyl benzene sulphonate. Composition according to one of Claims 1 to 9, characterized in that it has a pH value in the range of 9.5 to 11.5, in particular 10 to 11, in an aqueous solution of 1% by weight. Composition according to one of Claims 1 to 10, characterized in that it has a viscosity in the region of 60 000 mPa · s to 100 000 mPa · s, in particular 70 000 mPa · s, at 25 ° C. up to 90,000 mPa.s (Brookfield rotary viscometer, spindle # 7, 5 rpm). Composition according to one of Claims 1 to 11, characterized in that it contains 5% to 15% by weight, in particular 6% to 10% by weight, of alkali metal carbonate and / or alkali metal hydrogen carbonate. Composition according to one of claims 1 to 12, characterized in that the components of the paste composition contained as a solid phase are fine-grained and have an average particle size in the range of 5 μΓη to 200 μιη, in particular 10 μίτι to 80 μΓη. Composition according to any one of claims 1 to 13, characterized in that at most 15% of the particles of the constituents contained as the solid phase have a particle size of more than 200 μΓη. Composition according to one of Claims 1 to 14, characterized in that it contains 0.2% by weight to 1.5% by weight, in particular 0.5% by weight to 1% by weight, of an enzyme, in particular a protease, amylase, lipase and / or cellulose. A process for the preparation of a paste composition according to any one of claims 1 to 15, characterized in that a nonionic surfactant is introduced, a mixture of a fatty acid and an alkali metal salt of the fatty acid is optionally mixed with a suds regulator, and a synthetic anionic surfactant to a homogeneous masterbatch, optionally mixed with the paste powder components, including citric acid / citrate, which are dispersed in the masterbatch by mixing, optionally after heating to a temperature of about 80 ° C, then optionally again cooling to a temperature of about 80 ° C · ♦ ♦ / / / / ♦ · ♦ ♦ * * * * * * * * 45 ° C and the peroxy compound is metered in, the mixture thus obtained is subjected to a wet grinding process to obtain a product of the desired consistency and homogeneity, followed by further homogeneous incorporation of other substances, in particular temperature and shear sensitive substances. Use of the composition according to any one of claims 1 to 15 in an industrial laundry for washing and disinfecting soiled laundry. A method of washing and disinfecting laundry in an industrial laundry, characterized in that a composition according to any one of claims 1 to 16 is used. A method of washing and disinfecting laundry in an industrial laundry, characterized in that the corresponding composition according to any one of claims 1 to 16, which lacks a component, in particular an inorganic peroxy compound, is used and that component is used separately.